For those of you who are like me and don't have the patience to use a tooth brush to clean your bike, I found a cleaner that does the job. The spray is a 50/50 mixture of Armoral wheel cleaner and CLR. Spray it on the engine or wheels or wherever you desire. Let sit for about 30 sec to a minute. Rinse off (preferably with a pressure washer). Now you just need to dry.